n | a(n) |
---|---|
1 | 0 |
2 | 6 |
3 | 55 |
4 | 244 |
5 | 894 |
6 | 2948 |
7 | 9188 |
8 | 27580 |
9 | 80579 |
10 | 230740 |
11 | 650623 |
12 | 1812430 |
13 | 4999598 |
14 | 13680344 |
15 | 37180126 |
16 | 100464520 |
17 | 270114217 |
18 | 723090732 |
19 | 1928306149 |
20 | 5124900050 |
21 | 13579351352 |
22 | 35883161448 |
23 | 94587730636 |
24 | 248776803156 |
25 | 652982317119 |
[0,6,55,244,894,2948,9188,27580,80579,230740, 650623,1812430,4999598,13680344,37180126, 100464520,270114217,723090732,1928306149, 5124900050,13579351352,35883161448,94587730636, 248776803156,652982317119] |